DeriveKey Method
Generates a strong cryptographic key from a password.
Syntax
int DeriveKey(int iKeyBits, const QString& qsPassword, const QString& qsSalt);
Remarks
Use this method to generate a cryptographically strong key of a needed length from a password.
This method uses a general-purpose PBKDF2 function with PRF1 and 2048 iterations.
Error Handling
This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)